Permutation door lock



v Aug. 23, M23.

P. GIBA PERMUTATION DOOR LOCK Filed Oct. 16, 1922 2 Sheets-Sheet 1 Aug-2H, 2923.

P. GIBA PERMUTATION DOOR Lcx 2 Sheets$heet 2 ammo c Pmm man Filed Oct. 16 1922 Patented Au 21, 1923.

rarsnrer ar a . .rrorn eras, or CHICAGO, ILLINOIS.

rnnrru ra'rron noon LOCK.

Application filed October 16,}922. Serial No. 594,718.

To c/Zwhom it may concern: V

Be it known that I, PIO'rRGIeA, a citizen of Polanchresiding at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Permutation Door Locks, of which the following isia specification.

This invention relates to looks, and more particularly to a keyless lock requiring-that the party desiring .to, open the lock, know the proper combination.

door showing an embodiment of the lock in place therein. I

Figure 2 is an edge view of Figure 1.

Figure 3 is a view similar to Figure 2,.

showing portions of the door broken away to illustrate the lock controlling discs.

Figure 4 is a longitudinal sectional view thru Fig. 1, showing the cover plate ofthe lock removed and portions of the locking discs broken away,

Figure 5 is a face view of one of the looking discs.

Figure 6 is a vertical sectional view taken on'line 66 of Figure 5.

Figure 7 is a perspective view of the guide members of one ofthelocking discs.

Figure 8 is a perspective view of one of the locking discs, which co-operates with that shown in Figure 7.

Figure 9 is a transverse sectional view taken on line 99 of Figure 5.

In the drawings, the numeral 10 desig- 'nates a door provided with an cscutcheon plate 11 having iormedtherein a sight opening 12. The lock, designated generally by! the numeral 13, is mortised into the door, as indicated by the dotted'lines in Figure 1, also as illustrated in Figure 4, and contains the'customary spring actuated latch 14, the

movements of which are controlled by the spring 15 and the knob 16.

7 As illustrated inFigure 4, the body of the latch 14 is provided on opposite, longitudinal edges, with rack teeth in engagement with'the pinion 17, through which the rectangular spindle of the knob 16 extends. Mounted in parallel relation with the latch 14, is the locking bolt 18, provided on its upper side with a plurality of rack teeth for engaging a pinion 19, mounted to rotate in the lock housing. as shown.

This pinion 19 is provided with a central rectangular opening for the reception of the lock bolt controlling knob 20, positioned on: the exterior of the escutcheon plate as illustrated on Figures 1 and 2.

'As shown in Figure 4, the bolt slides on the guide 21, arranged within the lock casing, and is provided on itsunderside with a longitudinally extending rib 22, of lesser width thanthe thickness of the bolt. This rib is cut away at spaced intervals near its rear end to provide a plurality of depend ing teeth 23, the purpose of which will be more fully described.

As shown in Figures 2, 3 and 5, the bolt 18 is substantially oblong iii-cross section and is of a size to fit the openings 24 of the locking disc mountings.

Each locking disc is provided with an individual mounting, best illustrated in Figure 7, and comprises a disc 25 formed with an opening 24 to receive the locking bolt 18. Extending from one face of each disc 25, is a cylindrical stud 26, provided with an opening in alignment with and in shape to conform with the opening'24. This stud forms the bearing meniber of the locking disc, and as shown in Figure 7 the disc 25 is notched as at 27, to accommodate the rib 22 01": the locking bolt.

Rotatably mounted on the bearing member 26, is a locking disc 28 provided with a notch 29, so that when the disc is in a certain position, the notch 29 aligns with the notch 27 and the bolt may be freely projected or withdrawn. Said disc 28 is provided with a central opening 30, to receive the stud 26, and extending radially from the disc 28' is a tooth 31 for a purpose to be described.

Rotatably mounted on the periphery of the disc 25 is a ring 32 bearing the indicia 33, illustrated in Figures 1 and 4-. A similar ring 34 surrounds the disc 28, and is provided on its inner face with a series of notches 35 for the reception of the tooth 31 or" the disc 28. i

It will thus be seen that as the ring 34 is rotated, the disc 28 will be moved correspondingly, but the ring 32 may be moved, without in any way affecting the locking elements.

Due to the arrangement of the device on tive locking CllSCS,-'l1ll the intermediaterings will rotate lnoperatively-ontheir re,

spective 'mountings. As each ring .is provided on its periphery wrthnnchcm 83, it will be obvious that the user must know 1 which rings to move and a'lso which numbers bring about the desired effect before the bolt can be released. 1 a Should an unauthorized person become acquainted witht-he combinationfthe user may, by disassembling the device, change the relative position of eachringM, with its respective disc, by moving-theposition ofthe "tooth 8l in the notches 35 and thereby rearranging the combination without mate- 'rially affecting the lock.

Although the foregoing is descriptive-of the preferredembodiment ofthe invention, it will be apparent: that-minorchanges'may be made in its construction, without "the exercise of invention or conflictingxwith' the I scope of the claims? hereto appended.

Having thus described by invention, What I claim as new and desireto secure byLet- 1 ters "Patent, is

l; Alock comprislng a movable rectangu lar bolt, positive means for actuating said bolt, a ribformed on one edge of said bolt, a a

plurality "of bearing members mounted on thebolt, locking discs rotatably mounted" on the bearing members, saidlocking discs H being provided with 'notchesiteeth on said ;rib arranged so that when the notches 'are in alignment, the bolt. will betree to move throughth'e-discsand their respective bear in members and-rin son. the discs ar-' a 7' l a ranged to; move the discs ands rings on said 7 bearing members.

2. A lock comprising a longitudinal movable rectangular bolt, positive meansfor projecting and withdrawingis'aid bolt, a rib formed on one edge iofsaid bolt, a plurality of bearing members V-shdably mounted on thebolt, locking discs rotatably mounted on the bearing members; said locking discs being provided with -notchesfteeth onsaid rib arranged so that when the notches'of the "discs are in alignment the bolt will be free to move through the discs and their respective bearing members, rings'onfthe discs arranged to move the same, wings on the bearing members, and means adjustably connecting the ClISCSWlllllllhGli respective rings More GIB'A.

7 whereby the combination may be changed. 7 

